Hitoshi Hatakeyama

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Kakogawa, JP

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Patents Grantslast 30 patents

Information Patent Grant
Process for separating 2, 7-dimethylnaphthalene under pressure
- Patent number 5,220,098
- Issue date Jun 15, 1993
- Petroleum Energy Center
- Kazumoto Nakamura
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
Process for separating methyl substituted naphthalene by crystalliz...
- Patent number 4,992,619
- Issue date Feb 12, 1991
- Showa Shell Sekiyu K.K.
- Shunichi Koide
- C07 - ORGANIC CHEMISTRY